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Q: Fachverband Quantenoptik und Photonik

Q 38: Quanteneffekte (Verschränkung und Dekohärenz)

Q 38.7: Talk

Thursday, March 13, 2008, 12:45–13:00, 2D

Single-Particle Interference Can Witness Bipartite Entanglement — •Torsten Scholak¹, Florian Mintert^2,3, and Cord A. Müller¹ — ¹Physikalisches Institut, Universität Bayreuth, 95440 Bayreuth, Germany — ²Max-Planck-Institut für Physik Komplexer Systeme, Nöthnitzerstraße 38, 01187 Dresden, Germany — ³Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, 79104 Freiburg, Germany

We propose to realize entanglement witnesses in terms of the interference pattern of a single quantum probe [1]. After giving a conceptional recipe, we discuss possible realizations both with electrons in mesoscopic Aharonov-Bohm rings and with photons in standard Young's double-slit or coherent-backscattering interferometers.

[1] arXiv:0710.0825